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Updated: May 29, 2026

In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila
Published on: August 20, 2019
Three siblings with Cerebrotendinous Xanthomatosis: a novel mutation in the CYP27A1 gene
Sunghwan Suh1, Hee Kyung Kim, Hyung-Doo Park
1Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-Dong, Gangnam-Gu, Seoul 135-710, Republic of Korea.
Abstract:
Cerebrotendinous Xanthomatosis (CTX) is a rare autosomal recessive lipid storage disease caused by sterol 27-hydroxylase (CYP27) deficiency. We report three CTX siblings that shared a novel mutation of the CYP27A1 gene. These siblings presented with elevated cholestanol levels and typical manifestations such as tendon xanthomas, cataracts, osteopenia, mental retardation, cerebellar ataxia and peripheral neuropathy. All shared the same genetic mutation, c.1146_1151delins and c.1214G>A of CYP27A1. All were treated with 750 mg/day chenodeoxycholic acid (CDCA). In conclusion, one should consider the possibility of CTX in any individual with normocholesterolemic xanthomatosis, early-onset cataracts, mental retardation, cerebellar ataxia and peripheral neuropathy.
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